JPH0427446B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a governor with a simple structure for feeding gas supplied from a gas cylinder to a combustion section at an appropriate pressure.

(Prior art) This type of governor has a structure such as that shown in Utility Model Publication No. 56-32732 as a valve body, and includes a diaphragm for regulating the pressure of gas discharged from a gas cylinder, and a diaphragm for regulating the pressure of gas discharged from a gas cylinder. It consists of a lever-shaped valve member etc. that interlock with the valve member.

For this reason, the valve member and the like had to be incorporated into the pressure adjustment chamber, which caused the problem that each part had to be large-sized. As the adjustment chamber becomes larger, the force acting on the diaphragm, counter spring, etc. also increases, and the amount of residual gas also increases accordingly. There was also the problem that the size of the governor prevented the miniaturization of gas appliances.

(Technical Problem) An object of the present invention is to solve the above-mentioned problems, and to provide a governor that has a simple structure and is suitable for downsizing.

(Technical Means) In order to achieve the above object, the present invention provides a main body with a gas inlet 1 for introducing gas discharged from a gas cylinder.
1, a pressure regulating chamber 13 connected to the gas inlet by a gas passage 12, and a gas outlet 21 for leading out gas from the main body, and the gas passage 12 has valve pieces 29, 35c that can open and close the passage. regulating valve 14,
35 is attached, and the projections 15, 3 are located on the pressure adjustment chamber side of the adjustment valve and are integral with the valve pieces 29, 35c.
5a, an adjustment member 16 that defines its position is disposed so as to be able to come into contact with it, and the adjustment member 16 is supported by a diaphragm 17 that defines one side of the pressure adjustment chamber, and the adjustment member is urged in the direction of the protrusion. and valve closing springs 28 and 36, which have a slightly larger load than the springs that bias the protrusion toward the adjustment member.
This measure was taken to establish a.

(Function) In order to operate the governor configured as described above, the gas cylinder 1 is connected to the socket member 3,
38 and operate the instrument stopper knob 43.

The cylinder 1 is connected to the socket member 3 by a holding device 51, and the valve nozzle 2 is opened to discharge gas. After passing through the valve chamber 7 in the example of FIG. 2, the gas flows directly into the governor body 10 from the gas inlet 11 in the example of FIG. It reaches the combustion section 46 via the pressure adjustment chamber 13, the gas outlet 21, and the feed path 41,
It is opened and closed in the feed path 41 by an instrument stopper 42.

The amount of gas passing through the regulating valves 14 and 35 is determined by a gap G that is preset at the manufacturing stage. During this time, the diaphragm 17 is under the action of the pressure of the gas flow, and as the pressure increases, the pressure adjustment chamber 13 expands, and the protrusion 15 also moves toward the chamber 13, reducing the gap G, and vice versa as the pressure decreases. Increase the gap G. Therefore, when a fluctuation occurs in the gas, the pressure is properly regulated and sent to the combustion section.

(Example) A description will be given below with reference to the drawings. FIG. 1 shows the main parts of a gas appliance using the governor of the present invention.
1 is a gas cylinder, and 2 is its valve nozzle, which is connected to a socket 3 of a governor 10 through a connection port 4. The gas discharged from the gas cylinder 1 is pressure-regulated by the governor 10, passes through an appliance plug 40, and is sent to a burner, etc. It flows to the combustion section 46.

In the socket part 3, 5 is a socket member that receives the valve nozzle 2, 6 is a valve body disposed movably in the center hole of the socket member 5, 7 is a valve chamber that accommodates the valve body 6, and 8 Reference numeral 9 indicates a closing spring that pushes the valve body 6 in the closing direction, and 9 indicates a sealing member such as an O-ring placed at a key location.

The governor 10 is shown more specifically in FIG. 2, and includes a gas inlet 11 opened at one end of the case-like body, a pressure adjustment chamber 13 connected to the gas inlet 11 through a gas passage 12, and a gas passage. an adjustment valve 14 provided within the pressure adjustment chamber 12; an adjustment member 16 having a recess that contacts the protrusion 15 of the adjustment valve 14 that protrudes into the pressure adjustment chamber 13 and defines its axial position;
It has a diaphragm 17 that is movable in the axial direction together with the member 16, and a spring 18 that opposes the pressure in the pressure adjustment chamber 13 via the diaphragm 17.
A cap 20 serving as a spring holder for the spring 18 and fixing the diaphragm 17 is connected to the main body and the threaded portion 1.
9, and a gas outlet 21 is provided on the main body side to lead out gas from the pressure adjustment chamber 13 to the combustion section 30.

In addition, 22 is a step provided on the main body 1 outside the pressure adjustment chamber 13 so as to fix the diaphragm 17 at the periphery, 23 is a fixing piece provided on the cap 20 side to fix the periphery of the diaphragm 17, and 24 is a fixing piece provided on the cap 20 side to fix the periphery of the diaphragm 17. A seal member 25 is interposed between the fixed piece 23 and the diaphragm 17, and 25 is a seat for the spring 18, which is threadedly engaged with the threaded portion of the adjusting member 16 and holds the diaphragm 17 therebetween.

The regulating valve 14 installed in the gas passage 12 includes a shaft portion 26 having the aforementioned projection 15 at one end, and a valve cylinder 27 into which the shaft portion 26 is inserted so as to be movable in the axial direction.
, a valve-closing spring 28 compressed between a protrusion 26 a protruding from the side surface of the shaft 26 from the protrusion 15 and a valve seat 27 a at the inner bottom of the valve cylinder 27 , and the elasticity of the spring 28 comprises a valve piece 29 that presses against the other end of the valve cylinder 27 to close the valve, a seat 30 that is integrated with the shaft part 26 and provided with the valve piece 29, and a sealing member 31 fitted to the outer periphery of the valve cylinder 27. The regulating valve 14 itself is attached to the mouth of the gas passage 12 on the pressure regulating chamber 13 side by a threaded portion 32 provided at one end thereof.

33 is a shaft part 26 near the valve seat that prevents the valve cylinder 27 from coming off.
A reference numeral 34 protrudes above the valve cylinder 27 to prevent the seal member 31 from slipping out. Therefore gas inlet 1
The gas flow flowing in from the shaft portion 2 having the protrusions 15
6 moves in the direction of compressing the valve closing spring 28, and when the lower end of the valve cylinder is separated from the valve piece 29 to form a gap G, the gas exits through the inside of the valve cylinder 27 to the pressure adjustment chamber 13, and the gas outlet 21 This leads to the instrument plug part 40.

As the above-mentioned regulating valve 14, for example, a valve used in automobile tires and commonly known as a bug valve can be used as it is. is easy, and the governor can be made significantly smaller.

Figures 4 and 5 show a regulating valve 35 with a different structure from the above.
An example using . This regulating valve 35 has an inverted T-shaped cross-sectional shape, one of which is a protrusion 35a similar to the above, and the other is a flange-shaped portion 35b, and the protrusion 35a is also located on the adjustment chamber 13 side. Flange-shaped part 35
b is located on the gas inlet 11 side, and in the sliding chamber 12a expanded from the middle of the gas passage 12, the flange-shaped portion 3
5b and the valve closing spring 3 compressed between the sliding chamber wall 12b
6 pressurizes toward the adjustment chamber 13, and the protrusion 35a
a valve piece 35c that is pushed against the valve closing spring 36 by the adjustment member 16 in contact with the valve member 35c and is provided on the flange-shaped portion 35b;
A predetermined gap G is formed between the adjustment valve 35 and the valve seat 37a at the edge of the slip-off prevention member 37 attached to the other end of the sliding chamber.

In the case of the embodiments shown in FIGS. 4 and 5, the gas inlet 11
also serves as the gas cylinder connection port 4, and there is no valve body 6 or the like interposed between the governor body 10 and the socket 3 that connects the valve nozzle 2, so that the gas cylinder 1
is configured to be directly connected to the governor main body. Reference numeral 38 designates the same socket member as described above, and 39 represents a sealing member.Since the other configurations may be the same as in the case of FIGS. 1 to 3, the same reference numerals are given and the explanation will be omitted.

Reference numeral 41 indicates a gas supply path formed in the instrument stopper 40, 42 indicates an instrument stopper provided in the middle of the supply route 41, and 43 engages with the shaft portion 44 of the instrument stopper 42 to form a through hole of the instrument stopper 42. 45 is a knob for aligning or displacing the feed channel 41, and 46 indicates a combustion section having a duct 47 connected to the feed channel 41 of the appliance plug part 40. 50 again
is a yoke equipped with a magnet 49 that magnetically attracts the flange 48 of the gas cylinder 1;
Configure. This yoke 47 is made of a material that loses its magnetic force when the set temperature is reached, and serves as a safety device in the event of an abnormality.

(Effects) The present invention is configured as described above, and the gas discharged from the gas cylinder is supplied to the pressure adjustment chamber through the adjustment valve, and after being pressure regulated by the diaphragm, is sent to the gas outlet, so it is stable. Gas can be sent to the combustion section etc. at the same pressure, and since there is no lever-shaped valve member like in conventional governors, the pressure adjustment function is also smoother. In particular, since the regulating valve of the present invention can be significantly downsized, the structure of the governor can also be simple and compact. This type of governor is manufactured by casting, and as the whole is miniaturized, it is extremely lightweight and compact, and the proportion of volume that it occupies inside the gas appliance is significantly smaller, which contributes to making the entire gas appliance smaller and lighter. Contribute.

[Brief explanation of drawings]

The drawings relate to an embodiment of the governor according to the present invention, and FIG. 1 is a cutaway plan view of essential parts showing the relationship of the entire gas appliance, FIG. 2 is a longitudinal cross-sectional view of the governor, and FIG.
4 is an enlarged sectional view of the regulating valve, FIG. 4 is a longitudinal sectional view of the governor of the second embodiment, and FIG. 5 is an enlarged sectional view of the main parts thereof. 1... Gas cylinder, 10... Governor, 11... Gas inlet, 12... Gas passage, 13... Pressure adjustment chamber, 1
4, 35... Regulating valve, 15, 35a... Protrusion, 16...
Adjustment member, 17...Diaphragm, 18...Spring, 2
0...Cap, 27a, 37a...Valve seat, 28,3
6... Valve closing spring, 29, 35c... Valve piece.

Claims (1)

[Claims] 1 A gas inlet 11 for introducing gas discharged from a gas cylinder into the main body, and a gas passage 1 at the gas inlet.
The gas passage 1 is provided with a pressure adjustment chamber 13 communicating with the gas passage 1 and a gas outlet 21 for leading out gas from the main body.
2, a regulating valve 14, 35 having a valve piece 29, 35c capable of opening and closing the passage is attached, and a protrusion 15, 35a located on the pressure adjustment chamber side of the regulating valve and integral with the valve piece 29, 35c. An adjustment member 16 that defines the position thereof is disposed so as to be able to come into contact with the adjustment member 16, and the adjustment member 16 is supported by a diaphragm 17 that defines one side of the pressure adjustment chamber, and further urges the adjustment member in the direction of the protrusion. A governor having a configuration in which a spring 18 and valve-closing springs 28 and 36, which have a slightly larger load than the spring that biases the protrusion toward the adjustment member, are provided.